Add an i2p.dir.lib property

...sole/java/src/net/i2p/router/web/RouterConsoleRunner.java

...sole/java/src/net/i2p/router/web/WebAppConfiguration.java

...e/java/src/net/i2p/router/web/helpers/FileDumpHelper.java

...nsole/java/src/net/i2p/router/web/helpers/LogsHelper.java

core/java/src/net/i2p/I2PAppContext.java

core/java/src/net/i2p/crypto/KeyStoreUtil.java

core/java/src/net/i2p/time/BuildTime.java

router/java/src/net/i2p/router/Router.java

router/java/src/net/i2p/router/tasks/InstallUpdate.java